LIFESPAN AGE CALCULATOR - Peter Riddell - Subtract Dates Answers In Years Months and Days

LIFESPAN AGE CALCULATOR
by Peter Riddell

The Date & Age Calculator
That Answers Like A Human

LIFESPAN Age Calculator is a software date calculator program that can add and subtract dates. Lifespan accepts a start date and an end date and outputs the elapsed time in years, months and days. Lifespan can also determine a start date if you give it the end date and an elapsed time period in years months and days. Effectively subtracting dates from each other and subtracting ages in years months and days from dates to determine a starting date.

Hi, my name's Peter Riddell, I study Information Technology and I too am plagued by the scourge that is date subtraction and spreadsheets. ( I thought they would excel at date subtraction). After a bit of mucking around I have written an Excel module to subtract dates and also an Open Office.org module to subtract dates. I searched the internet, downloading a few calculators with their accompanying adware, spyware and nagware. After this painful and fruitless journey I went against my better judgement and decided to solve the problem with my newfound c++ skills. "That should lighten my workload", I thought, "I'll quickly whip up a tool to do it for me in future".

Lifespan Age Calculator and Date Calculator is the product of my desire not to have to do any more date calculations than can possibly be avoided. Ironically, in the process of making this, I think I've done more date subtractions than Liz Taylor's divorce attorney or Chopper Reid's parole officer.

Lifespan Age Calculator Stand Alone Program
Select this if you want to double click a shortcut and type in dates to get an elapsed age.
Download | Donate $5 By PayPal

Lifespan Age Calculator Excel Macro
Select this if you want to calculate elapsed age in years, months and days in an Excel spreadsheet
Download | Donate $5 By PayPal

Lifespan Age Calculator for Open Office Calc
Select this if you want to calculate elapsed age in years, months and days in an Open Office Calc spreadsheet.
Download | Donate $5 By PayPal | Installation Tutorial

FEATURE COMPARISON

Stand Alone Program	Microsoft Excel Macro	Open Office Calc Macro
~ subtract dates	~ subtract dates	~ subtract dates
~ answer years, months, days	~ answer years, months, days	~ answer years, months, days
~ calculate start date	~ no date type restrictions	~ free update notification
~ fast, efficient, tiny download	~ free update notification	~ fast, efficient, tiny download
~ no adware or spyware	~ several options for function args	~ several options for function args
~ easy installation	~ detailed installation instructions	~ detailed installation instructions

BUG REPORTS - PROBLEMS

Submit your bug report here.

Wanted!! Bugs in Lifespan, Dead or Alive. To qualify for the reward find a pair of dates that Lifespan returns an incorrect answer for, or an end date and age for which Lifespan calculates an incorrect start date. The reward will be acknowledgment as a valued Lifespan Debugger on the websites. If it turns out not to be a bug, it's ok.

FREE UPDATE NOTIFICATION

Click Here To Subscribe To Update List

Click on the above link to join my automatic update notification email list. It will generate a blank email with the subject Lifespan Subscription in your email program. Send it to me and I will personally email you when I release updates to Lifespan. It doesn't actually have to be an empty email, you could say nice things if you wish. Lifespan Age Calculator subtracts dates giving the answer in elapsed years months and days. It can also subtract an age from a date to determine a starting date. Perfect for Family Historians and Genealogists.

Any data provided will be kept in the strictest confidentiality in accordance with my iron-clad two line privacy statement

1. You are guaranteed complete privacy as all email addresses provided for subscription to the Lifespan Age Calculator update list will only be used for update notification regarding Lifespan Age Calculator.

2. I have no affiliates, partners or any other parasites who have access to my data.

LINUX AND APPLE SUPPORT

Linux - LIFESPAN AGE CALCULATOR v3.1 will work under the WINE emulator. WINE is installed as a standard part of most modern Linux distros. To run Lifespan Age Calculator in Linux, unpack the Lifespan installer you downloaded. It's just a zip file. Right click on the Lifespan executable file, lifespan.exe, and choose to "Run In Terminal". If you have a command line fixation, open a terminal, navigate to the folder in which you've stored the single Lifespan executable file and type:
wine lifespan.exe

Apple - Implementation of the Apple version of Lifespan has proven to be a real pain in the b***. I can only recommend the use of X86 emulation products such as Bosch or PCx. Lifespan should be able to run in WINE here too. Sorry I can't make if happen natively for you guys but Lifespan doesn't pay the bills at my place, unfortunately.

GENEALOGISTS AND HISTORIANS

There is a potential 11 day inaccuracy in some dates due to the Julian-Gregorian calendar change-over. By country, 11 days can disappear anywhere from 1582 to 1928. Incorporating this level of detail into Lifespan would destroy it's simplicity, however I am not throwing you to the wolves on this point. Toke Norby's Calendar Page is a great reference on this topic. This link also has some good material and a detailed listing of when many countries made the transition. This transition period is open to conjecture in some countries (which is why hard coding this is highly impractical). If the Lifespan you are looking at covers the date range relevent to the country you are considering subtract 11 days from the answer Lifespan Age Calculator gives you. Aren't you glad I let you decide when that time range is and didn't just hardcode it.

Lifespan Calculator was made for the benefit of the wider net community.If there is a problem, feel free to report it to me and I will fix it. Bug reports are like gold and I greatly appreciate feedback. Bug reports leading to code revisions will be acknowledged on the websites. My contact details are shown at the end of each program run. Although this software has passed extensive testing and is under constant revision, I do not offer any guarantee or warranty. Also, if you poke out your eye whilst using this program you need to review your computer usage habits. Congratulations, if you've read this far you're more patient than I thought. Thanks and I hope you like Lifespan. © 2002 Peter Riddell - Lifespan Age Calculator by Peter Riddell